Half to edward j



(No Model.)

B. P. CALDWELL. COMBINATION PADLOGK.

Pate ted Apr. 19, 1892.

' five/ 502? Edward]? CalolwaZZ.

UNITED STATES PATENT OFFICE.

EDWARD P. CALDWELL, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR OF ONE- HALF TO EDIVARD J. EDWARDS, OF SAME PLACE.

COMBlNATlON- PADLOCK.

SPECIFICATION forming part of Letters Patent No. 473,059, dated April 19, 1892.

Application filed December 2'7, 1890. Serial No. 375,981. (No model.)

T all wiwm i may BOW/087%: In the drawings, 2 represents the main cas- Be it known that I, EDWARD P. CALDWELL, ing, which is preferably formed as a circular of Minneapolis, in the county of Hennepin casting having an open front in which is seand State of Minnesota, have invented cercured a plate 28, which forms the front of 55 tain Improvements in Combination-Locks, of the casing and makes a watertight joint which the following is a specification. therewith. The plate 28. is preferably pro- My invention relates to combination-locks, vided with recesses 39, into which a suitable and particularly to those made in the form of instrument may be inserted for the purpose a padlock having a pivoted staple and espeof turning the plate. A shackle 3 is piv- 6o cially adapted for use on car-doors or mailoted on the casing by means of a pin 4 and boxes.'- lugs 5. The free end 6 of the shackle is pro- The object of the invention is to provide a vided with a notch 7, into which the sliding combination-lock which may be opened by inner locking plate or bolt 8 is adapted to enthe manipulation of a suitable knob controlter when the end of the shackle enters the I 5 ling the combination wheels or tumblers, and case. The locking plate or bolt 8 is arranged the action of which may be noted by the obto slide within the inner wall of the casing. servance of marks upon'the'knob-dial, by the The locking-plate 8 is preferably extended movements of a certain indicating figure that around the inner wall of the casing and is may be seen or the movements of which may provided with an opening 21, through which 20 be felt, or by the observance of. sounds or the end of the shackle extends when it is inclicks made by the lock mechanism as the serted into the case. The locking plate or knob is turned'step by step. bolt 8 is preferably held in position by means The invention consists generally in a lock of a pin 22 and the lug 23. Y 1 provided. with a movable pin or other device Arranged within the case 2, and preferably 2 5 that moves in and out as the knob is turned, in a central position therein, is a stud or prothereby enabling the movement of the tumjection 11, secured to or formed integrally blers to be determined by counting the movewith the back plate 12 of the casing. Any

ment of the pin, and the movement of the pin suitable series of combination wheels or tum? being noted either by feeling the pin as it blers 10 may be used. I haveshown two such 8o 0 moves out and in or by seeing and counting wheels mounted on the stud 11 and provided its movements. with rings 13,having lugs or pins 13'. These Further, my invention consists in means pins project through the wheels or tumblers whereby a removable side or face of the lock- 10 and are adapted to engage one another, case is secured in position, so as to render its and by changing the position of these rings 8 5 3 5 removal impossible while the bolt is locked. the combination is changedin the usual man- My invention consists, further, in various ner. The wheels 10 are separated by means details of construction and in combinations of suitable collars 10, and the wheels are cahereinafter described, and particularly pointpable of turning independently of each other. ed out in the claims. Each wheel 10 is provided with a notch 17 in 40 My inventionwill be more readily underits edge. Hinged to the locking-plate 8 is a stood by reference to the accompanying drawspring-dog 19, having a lug 18 on its end. A ings, in which 7 projection 18 is formed on or secured to the Figure 1 is a face elevation of a cornbinainner surface of the case, and when the bolt tion-lock embodying my invention. Fig. 21s or plate 8 is in position for locking the shackle 9 5' 5 a transverse section thereof on the line y y of the dog 19 lies against the inner wall of the Fig. 3. Fig. 3 is a sectional view on the line casing and abuts against the projection 18 a: 00 of Fig. 2. Fig. 4 is a transverse section and cannot be moved. IVhen the wheels 10 showing the staple-bolt locked in the case. are brought into position with the notches 17 Figs. 5 and 6 are details showing the means opposite the dog 19, the dog is thrown for- 10 5o employed for locking the removable side or ward and the lug l8 enters the notches 17. A

face of the lock-case in position. further movement of the wheels 10 draws oack the bolt or locking-plate 8 and carries the end of the dog 19 inside of the projection 18, and when the locking-plate is in'this position the shackle may be withdrawn.

Asuitable knob or handle 27 is arranged upon the outside of the face-plate 28 and is provided with the usual graduated disk or dial 26, having figures, letters, or characters marked thereon, and the plate 28 is provided with the mark or point 29 in the usual manner.

Secured upon the knob-post 16, inside of the face-plate 28, is a disk or secondary plate 41, having a notch 42 in its edge. this notch is rounded off for a purpose hereinafter explained. The .under or inner surface of the plate 28 is provided with a groove 38, andthe notch 42 is at all times directly under or inside some part of this groove. The plate 28 is also provided with a notch or recess 48, that is formed as an offset from the groove 38. The lug 18 on the dog 19 proje cts above the upper edge of the lockingplate 8. Then the plate 28 is screwed into place, the lug 18 must be in the notches 17 in the wheels 10. The end of this lug will then enter the notch 42 in the disk 41 and project into the groove 38 in the plate 28.

While screwing in the plate 28thelug 18 will remainin the notch 42 and hold the knob stationary. When the plate 28 has been screwed home, the recess 48 will be opposite the end of the projection 18'. Then by turning the knob the abrupt side of the notch 42 will force the bolt or plate 8 into locking position. A reverse movement of the knob will cause the rounded side of the notch 42 to force the lug 18 and dog 19 out against the wall of the casing and into position where the end of the dog 19 will lie against the projection 18. The upper end of the lug 18 will then be in the notch or recess 48, and it will thus lock the plate 28 in position and prevent its being removed until both disk 41 and the tumblers or wheels 10 have been brought into position to bring their notches opposite the lug 18. When this is done, the dog 18 will be thrown forward by its springbringing the lug 18 into the notches, and by turning the disk 41 and the wheels 10 together the locking bolt or plate 8 may be withdrawn. Secured to the knob-spindle isa disk 15, having a pin orlug 14, that isadapted to engage the pin of the upper combination wheel or tumbler, and by means of this disk the wheels or tumblers are turned in either direction by turning the knob or handle. This disk may, if preferred, be adj ustably secured upon the knob-spindle or the pin or lug 14 may be adj ustably secured upon the disk 15.

It is oftentimes desirable to open a combination-lock in the dark, and especially is this desirable where the lock is used upon cardoors or mail-boxes, and I provide means by which one knowing the combination may open the look without seeing the marks upon the dial. As it is also possible for some persons One side of direction.

who do not know the combination to open combination-locks by hearing the sound that is made by the pins on the tumblers or wheels coming in contact with each other, and thus determining the position of the wheels, I provide means for preventing this by causing a regular succession of sounds as the knob is turned in either direction, thus obscuring or covering up the sound made by the contact of the pins or lugs on the combination-wheels. To accomplish these ends I provide within the casing a clicking or soundingdevice that produces sounds at regular intervals as the operating knob or handle is turned in'either This device may be of any suitable construction and arranged in any suitable manner. I have shown the disk15 provided upon its edge with a series of teeth 33, preferably rounded in form, and I arrange a spring 35 within the case and in position to engage the notched or serrated edge of the disk 15. As the knob is turned in either di- 7 rection the spring 35, riding over the disk, produces a sharp clicking sound, which maybe heard by the person moving the knob.

In order that it may be known at what point to begin to count the clicks, I provide one long space 36 between two of the notches in the disk 15,, thus giving one long interval between two clicks. This will determine the point from which to begin to count the sounds. As it is sometimes desirable to open the lock by feeling the parts, (without reference to the sound,) I prefer to provide means by which, as the knob is turned in either direction, its movement may be noted by merely feeling the lock. For this purposel provide a movable part that, as the knob is turned, moves out and in at regular intervals or pulsates, and by placing the hand in position to feel these movements or pulsations they may be counted, and thus the lock beoperated. Any suitable device may be used for this purpose. I prefer to provide a 'pin 30, thatIcall a touch-pin and that is arranged to project through an opening in the wall of the casing and through a slot 31 in the plate 8. The head 32 of this pin bears against the serrated edge of the disk 15, and as the disk is turned the pin is forced out against a thumb or finger placed over its end, the pressure on the end of the pin forcing it back after passing each other. The one long space on the disk gives one long interval between two movements of the pin and this denotes the movement from which to begin to count to open '{Jhe lock on any combination for which it may e set.

I have illustrated What I consider to be the best construction of parts for carrying out my invention; but I am not to be understood as limiting myself to such details, as it is obvious that the mind of a mechanic will suggest many equivalents of the touch-pin and. of the serrated disk and of other parts which would be embraced within myinvention. For instance, the serrations on the disk constitute a series of successive pulsations are imparted to said pulsated device to transmit them to an object on the outside and in contact with said device for indicating the movements of the locking mechanism, substantially as described. 1

2. The combination,iu a permutation-lock, with the operating mechanism, of means pro vided in connection therewith for indicating the positions of the locking devices by one series of indications that can be seen, another that can be heard, and another that can be felt, the last indicator beingapulsating member establishing communication between the interior and the exterior of the lock and pulsated successively as the locking mechanism is operated, substantially as described.

3. The combination, in a lock, of tumblers or combination-wheels arranged to be operated by the movement of a suitable knob provided on the outside of the lock, with a serrated disk upon the inside of the lock in connection with said knob, and a touch-pin extending through the casing of the lock and engaging the serrated portion of the disk, substantially as described.

4. In a lock, the combination, with a suitable casing, of an operating knob or handle and a movable piece adapted to be moved in and out through the lock-casing at regular intervals as the knob is turned in either direction, substantially as described.

5. In a lock, the combination, with handle or knob, of the disk 15, secured upon the knob-spindle and provided with a series of serrations, with a long space between two of said serrations, and the touch-pin engaging said disk and extending through the wall of the casing.

6. In alock, the combination, with casing 2, provided with the open face, the face-plate 28, adapted to be screwed into said casing, and means located entirely within the casing and engaging said face frominside the casing for locking said plate when the device islocked and releasing it when unlocked.

7. In a lock, the combination, with the easing 2, of the screw-threaded front plate 28,

provided with the groove 38 and the recess 48, the locking-bolt 8, provided with the dog 19, having the lug 18, the knob, and the disk 41, screwed to the kn ob-spindle and provided with the notch 42, all substantially as described.

8. In a lock, the combination, with a suitable casing, of a series of combination-wheels, a sliding locking plate or bolt extended along the inner curved wall of the casing and formed with an opening for the shackle to pass through, and a dog pivoted to said plate and engaging said wheels, substantially as described. I

9. The combination, in a lock, with a suitable casing, of aseries of combination-wheels, each provided with a notch in its periphery,

an operating knob or handle, a disk secured thereto and provided with a notch in its periphery,a sliding locking plate or bolt, and a pawl or dog pivoted to said plate and engaging the periphery of said disk and wheels and having its end extended to lie in a recess formed in the face of the casing, whereby when the notches upon said wheel and disk are brought into linewith each other beneath the end of said dog said dog will engage therewith and the locking-plate may be removed by turning the disk, and when the pawl is out of said notches it will lock the face of the casing in place, substantially as described.

10. The combination, with the casing 2, of the series of combination-wheels arranged therein, each provided with a notch upon its periphery, the operating-handle, the disk secured to said handle within said casing and provided with a notch upon its periphery, one wall of which slot is angular and the other curved, the pivoted shackle, the sliding plate arranged to engage said shackle and provided .with a pivoted dog having a projecting end or lug that bears upon the peripheryof said Wheel, substantially as described.

11. The combination, with the casing 2, pro vided upon its inner surface with a lug or projection, of the shackle secured to said casing, the sliding plate extended along the inner curved wall of the casing, arranged to engage said shackle, and the spring-dog pivoted on said plate to the rear thereof and between it and said projection on the casing and provided with a projection adapted to engage the notches in said wheels, substantially as described.

In testimony whereof I have hereunto set my hand this 20th day of December, 1890.

EDWARD P. OALD WELL.

In presence of- A. 0. PAUL, O. G. I-IAWLEY. 

